<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

<form action="{{ url_for('login') }}" method="POST">
    {{ form.hidden_tag() }}


    {{ form.username.label }}{{ form.username }}<br/>
    {{ form.password.label }}{{ form.password }}<br/>
    <input type="submit" value="提交">
</form>

</body>
</html>